Month: September 2026

Check Triangle Type: Equilateral, Isosceles, Scalene, or Invalid in C

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This program reads the three sides of a triangle and determines whether it is equilateral, isosceles, scalene, or not a valid triangle at all — using nested if-else statements. C Program #include <stdio.h> int main() { float a, b, c; printf(“Enter the three sides of the triangle: “); scanf(“%f %f %f”, &a, &b, &c); if … Read more

Swap Two Numbers Without Using a Third Variable in C

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This program shows how to swap the values of two variables without using a temporary (third) variable, using arithmetic operators. C Program #include <stdio.h> int main() { int a, b; printf(“Enter value of a: “); scanf(“%d”, &a); printf(“Enter value of b: “); scanf(“%d”, &b); printf(“\nBefore swapping: a = %d, b = %d\n”, a, b); a … Read more